Ryuichi Sakamoto -- BTTB: melodic, easy stuff but has something to dwell your mind on. I don't particularly like his latest piano outing Playing The Piano
, which is not convincing performance-wise, except for the early YMO pieces, but hear for yourself.
Also I'd throw in another CD that I just brought out and listen again: Green Woods
by Paul Machlis. Luxuriant Celtic piano/ensemble music.